Morse Code T shirt Ham Radio Operator Solid colors: 100% Cotton; Heather Grey: 90% Cotton, 10% Polyester; All Other Heathers: 50% Cotton, 50% Polyester Imported Machine wash cold with like colors, dry low heat Funny t-shirt for ham radio operators, CW continuous wave hobbyists, and amateur radio enthusiasts. Great gift for handheld radio technicians, Merchant Marine Merchant Navy, Navy and Coast Guard Signalers. Lightweight, Classic fit, Double-needle sleeve and bottom hem